Geometric Alignment of the Metatarsal Heads

ABSTRACT Background: Alterations in the positions of the metatarsal heads indicate from clinical experience a pathomechanical etiology of a wide range of clinical, chronic conditions. The present investigation uses a mathematical approach that is the only published model of metatarsal geometry that yields a unique parameter (eccentricity) to distinguish the unique alignments of the metatarsal heads.

Methods: From a weight bearing, dorsoplantar radiograph, the positions of the metatarsal heads are converted into Cartesian (points) which show up as one of the following conic type graphs: parabola, hyperbola (with two branches), ellipse

Results: This is the first time that the alignment of metatarsals was identified as a pathomechanical configuration or a healthy configuration. There was an obvious difference between the two configurations. This will mean better diagnosis and treatment. Conclusion: This Study is the first to investigate the relationship between the rectangular Coordinates of the five metatarsal head positions and unique conic type graphs. This will allow one to determine whether a configuration of the metatarsal heads is healthy or pathomechanical. If pathomechanical, then it may be converted into a healthy configuration. This can be done by using Computer Assisted Surgery. Also, public health screening can use these tests to conduct epidemiologic studies.